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Along with the increase in tuition and administrative activities unavoidable disruptions in the form of a power outage. Looking at the above, conditions would require continuous electrical energy without any form of interference suppression. It is necessary for the analysis of the electrical system, especially the electrical system at the University of Lancang Kuning to see the profile of voltage and power for each building. Voltage profile and power in Lancang Kuning University can be determined by using the theorem power flow and this study using the software of Analisys Electric Transient Program (ETAP).
The results achieved in this study by using ETAP software for system 7.0 is the existing condition of the flow in the main panel that was in the Genset room of Unilak of 211 A, voltage 378V line-to-linedan power 142 kW and from the simulation results shown that for the existing condition, the voltage drop occurred in the largest building of the Faculty of Administrative Sciences and Economics at 5% by the voltage on the panel / bus of Administration Faculty building at 363 volts line-to-line or 210 volt line-to-neutral voltage at the Faculty of Economics the panel / bus of 360.7 volts line-to-line or 207 volt line-to-neutral voltage drops then the next largest occurred in the Faculty of Law at 7.9% with a voltage on the panel / legal buses by an average of 352, 2 Volts line-to-line or 203 volt line-to-neutral.